63 results on '"Kichang Lee"'
Search Results
2. Computed tomographic features of massive pneumoperitoneum in a dog with intestinal lymphoma – a case report
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Sohee Lim, Yawon Hwang, Sangjune Sohn, Byunggyu Cheon, Chi Won Shin, and Kichang Lee
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General Veterinary - Abstract
A 6-year-old intact male Jindo dog was presented for reduced appetite, depression, and tympanic abdominal distension. Abdominal radiographs showed severe pneumoperitoneum and an intestinal mass. Computed tomography revealed massive pneumoperitoneum associated with intestinal perforation, with cervical and thoracoabdominal wall emphysema, pneumomediastinum, pneumoretroperitoneum, pneumoscrotum, and peritonitis. Surgery confirmed a ruptured jejunal mass, and histopathologic evaluation of the excised tissues revealed intestinal lymphoma. Clinicians should therefore consider the possibility of gastrointestinal perforation in patients with severe pneumoperitoneum even where there is no history of trauma. Despite clinical stability, intensive monitoring and urgent decompressive intervention should be performed in patients with severe pneumoperitoneum.
- Published
- 2023
3. Quality Evaluation of Ultrasonographic Equipment Using an ATS-539 Multipurpose Phantom in Veterinary Medicine
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Young-kwon Cho, Youngjin Lee, and Kichang Lee
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General Veterinary - Published
- 2022
4. Establishing veterinary graduation competencies and its impact on veterinary medical education in Korea
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Sang-Soep Nahm, Kichang Lee, Myung Sun Chun, Jongil Kang, Seungjoon Kim, Seong Mok Jeong, Jin Young Chung, and Pan Dong Ryu
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General Veterinary - Published
- 2023
5. Imaging diagnosis of paranasal sinus mucocele in a Yorkshire Terrier dog
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Kichang Lee, HG Shin, D Noh, and B Shin
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Yorkshire Terrier ,medicine.medical_specialty ,General Veterinary ,business.industry ,Medicine ,Imaging diagnosis ,Radiology ,business ,eye diseases ,Paranasal Sinus Mucocele - Published
- 2021
6. Abdominal fat content assessment by computed tomography in toy breed dogs
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Kichang Lee, D Noh, and J Park
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General Veterinary ,medicine.diagnostic_test ,business.industry ,Abdominal fat ,medicine ,Computed tomography ,Nuclear medicine ,business ,Breed - Published
- 2021
7. A deep learning model for CT-based kidney volume determination in dogs and normal reference definition
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Yewon, Ji, Hyunwoo, Cho, Seungyeob, Seon, Kichang, Lee, and Hakyoung, Yoon
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General Veterinary - Abstract
Kidney volume is associated with renal function and the severity of renal diseases, thus accurate assessment of the kidney is important. Although the voxel count method is reported to be more accurate than several methods, its laborious and time-consuming process is considered as a main limitation. In need of a new technology that is fast and as accurate as the manual voxel count method, the aim of this study was to develop the first deep learning model for automatic kidney detection and volume estimation from computed tomography (CT) images of dogs. A total of 182,974 image slices from 386 CT scans of 211 dogs were used to develop this deep learning model. Owing to the variance of kidney size and location in dogs compared to humans, several processing methods and an architecture based on UNEt Transformers which is known to show promising results for various medical image segmentation tasks including this study. Combined loss function and data augmentation were applied to elevate the performance of the model. The Dice similarity coefficient (DSC) which shows the similarity between manual segmentation and automated segmentation by deep-learning model was 0.915 ± 0.054 (mean ± SD) with post-processing. Kidney volume agreement analysis assessing the similarity between the kidney volume estimated by manual voxel count method and the deep-learning model was r = 0.960 (p < 0.001), 0.95 from Lin's concordance correlation coefficient (CCC), and 0.975 from the intraclass correlation coefficient (ICC). Kidney volume was positively correlated with body weight (BW), and insignificantly correlated with body conditions score (BCS), age, and sex. The correlations between BW, BCS, and kidney volume were as follows: kidney volume = 3.701 × BW + 11.962 (R2 = 0.74, p < 0.001) and kidney volume = 19.823 × BW/BCS index + 10.705 (R2 = 0.72, p < 0.001). The deep learning model developed in this study is useful for the automatic estimation of kidney volume. Furthermore, a reference range established in this study for CT-based normal kidney volume considering BW and BCS can be helpful in assessment of kidney in dogs.
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- 2022
8. Ultrasonographic quantitative evaluation of acute and chronic renal disease using the renal cortical thickness to aorta ratio in dogs
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Donghyeok Choo, Sung‐Soo Kim, Danbee Kwon, Kichang Lee, and Hakyoung Yoon
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General Veterinary - Abstract
The renal cortical thickness (RCT) has been correlated with renal function. Previous studies have also reported that the RCT:Abdominal aorta(Ao) ratio is constant in normal dogs with various physical factors. This multi-center, retrospective, analytical study aimed to determine if there are differences between actual RCT and predicted value of RCT considering physical factors in dogs with acute or chronic renal disease. We also aimed to demonstrate whether the RCT and Ao ratio index would be useful for evaluating renal pathology. A total of 54 dogs with acute or chronic renal disease and 30 normal healthy dogs were included in this study. The RCT was measured at the center of the renal pyramid as the shortest distance perpendicular to the renal capsule from the base of the renal medullary pyramid at three points. The diameter of the Ao was measured just caudal to the branch of the left renal artery in the sagittal plane in systole. The RCT:Ao ratio of chronic kidney disease (CKD) patients was 0.50 ± 0.11 (mean ± standard deviation). The RCT:Ao ratio in normal dogs was 0.67 ± 0.07. The RCT:Ao ratio in patients with acute kidney injury (AKI) was 0.83 ± 0.05. There was a statistically significant difference between normal dogs and dogs with CKD (P 0.001) and between normal dogs and dogs with AKI (P 0.001). In conclusion, findings from the current study supported using the RCT:Ao ratio as a non-invasive quantitative method for characterizing kidney pathology in dogs with acute or chronic renal disease.
- Published
- 2022
9. Evaluation of the Radial Procurvatum Using the Center of Rotation of Angulation Methodology in Chondrodystrophic Dogs
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Minji Kwon, Danbee Kwon, Jonghyop Lee, Kichang Lee, and Hakyoung Yoon
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radiograph ,General Veterinary ,antebrachium ,Veterinary medicine ,SF600-1100 ,canine ,Veterinary Science ,joint orientation angle ,radius ,Original Research - Abstract
The radial joint orientation angles were calculated using the center of rotation of angulation (CORA) methodology within the frontal and sagittal planes in chondrodystrophic dog breeds, including Welsh Corgi, Dachshund, Pekinese, Poodle, Beagle and Maltese, and it was compared whether there is a statistically significant difference between the breeds. Radial joint orientation angles were obtained in eighty-eight dogs, including 23 Welsh Corgis, 16 Dachshunds, 14 Pekinese, 13 Maltese, 12 Poodles and 10 Beagles. Using the CORA methodology, the cranial proximal radial angle (CrPRA) and caudal distal radial angle (CdDRA) in the sagittal plane and medial proximal radial angle (MPRA) and lateral distal radial angle (LDRA) in the frontal plane were measured for the six breeds studied. The mean values of joint angles for each breed were compared statistically were observed. The CrPRA, CdDRA, and LDRA mean values of Dachshund and Welsh Corgi breeds were significantly smaller than other breeds, and in MPRA, Pekingese showed significantly smaller values than other breeds. This study confirms that the mean values of radial joint orientation angles can be significantly different among chondrodystrophic breeds. To accurately evaluate the degree of angular deformity of the radius, it may be helpful to refer to the average value for each breed with chondrodystrophy.
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- 2022
10. Case Report: Multimodality Imaging of Infectious Sacroiliitis and Retroperitoneal Abscess Causing Hindlimb Ataxia in a Young Dog
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Kidong Eom, Jaehwan Kim, Jaeeun Ko, Kichang Lee, Young-Kwon Cho, Jeongyun Jeong, and Hakyoung Yoon
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musculoskeletal diseases ,medicine.medical_specialty ,Ataxia ,Veterinary medicine ,Case Report ,SF600-1100 ,Medicine ,magnetic resonance imaging ,Gluteal muscles ,Abscess ,Sacroiliac joint ,General Veterinary ,medicine.diagnostic_test ,business.industry ,Osteomyelitis ,Sacroiliitis ,osteomyelitis ,Magnetic resonance imaging ,computed tomography ,ultrasonography ,medicine.disease ,Fine-needle aspiration ,medicine.anatomical_structure ,Veterinary Science ,Radiology ,medicine.symptom ,infectious sacroiliitis ,business - Abstract
A 3-month-old intact male Labrador Retriever was presented for falling trauma and hindlimb ataxia. Radiography indicated radiolucent left sacroiliac joint with irregular margin. Computed tomography revealed thickened sublumbar muscles and hypoattenuated sacroiliac joint while magnetic resonance imaging demonstrated abscess at retroperitoneum and gluteal muscle. Ultrasonography showed lytic left sacroiliac joint with retroperitoneal fluid, and fine needle aspiration resulted Staphylococcus aureus. Hindlimb ataxia was attributed to infectious sacroiliitis and its secondary retroperitoneal abscess. As far as the authors' knowledge, this is the first report of multimodality imaging of infectious sacroiliitis with retroperitoneal abscess caused by S. aureus in a dog.
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- 2021
11. Erratum: Quality Evaluation of Ultrasonographic Equipment Using an ATS-539 Multipurpose Phantom in Veterinary Medicine
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Youngjin Lee, Young-kwon Cho, and Kichang Lee
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General Veterinary - Published
- 2022
12. Fungal balls detected using ultrasonography in the urinary bladder of a dog
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Hakyoung Yoon, Kichang Lee, and Donghyeok Choo
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medicine.medical_specialty ,genetic structures ,Urinalysis ,Itraconazole ,Urinary Bladder ,Urology ,Lumen (anatomy) ,Urinary incontinence ,Urine ,Pelvis ,Dogs ,Cystitis ,medicine ,Animals ,Dog Diseases ,Candida albicans ,Ultrasonography ,Urinary bladder ,General Veterinary ,medicine.diagnostic_test ,biology ,business.industry ,Candidiasis ,biology.organism_classification ,medicine.anatomical_structure ,medicine.symptom ,business ,human activities ,psychological phenomena and processes ,Cystocentesis ,medicine.drug - Abstract
A 9-year-old dog was presented with hematuria and urinary incontinence. Ultrasonography revealed multiple mobile echogenic ball-shaped structures without distal acoustic shadowing within the lumen. A cystocentesis was performed and a urinalysis of the urine revealed fungus. Candida albicans was identified using an additional urine culture. The patient was finally diagnosed with fungal cystitis with mobile fungal balls and managed with Itraconazole. Follow-up ultrasonography demonstrated the resolution of cystitis without fungal balls. Our findings suggest that fungal balls should be considered as a differential diagnosis when echogenic mobile ball-shaped structures are identified in the urinary bladder of a diabetic or immunocompromised patient.
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- 2021
13. Comparison of Dentoalveolar Bony Defects Measurements by Dental Radiography and Computed Tomography in Companion Animals
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Youngkwon Cho, Seung Hee Lee, Junho Han, and Kichang Lee
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stomatognathic diseases ,Dental radiography ,General Veterinary ,medicine.diagnostic_test ,business.industry ,Medicine ,Animal Science and Zoology ,Computed tomography ,Nuclear medicine ,business - Abstract
Background: Dental disorders are commonly encountered in companion animals and diagnosed with dental radiography (DTR) and computed tomography (CT). No study has been reported previously that compares dental measurements from DTR and CT in companion animals with periodontitis-related bone loss. The purpose was to compare the DTR and CT of bony defects in cats and dogs with dental disease.Methods: This is a retrospective study and the records of Jeonbuk Animal Medical Center were reviewed between June 2019 and October 2020. All patients underwent both modalities. In DTR, bisecting angle technique was used. In CT, slice thickness was applied at either 0.5 mm or 1.0 mm depending on the size of the patients. Bony defects of dentoalveolar structures were measured.Result: Eight dogs and eight cats with dental disease were included. All measurements in both cats and dogs were smaller in DTR than in CT. Additionally, CT with thin slice thickness provided more sufficient and accurate information for dental diagnosis. Conclusively, CT examination for dental disease showed to be superior in the assessment of periodontitis-related bone lesions by obtaining precise images without distortion and overlap and can possibly substitute DTR in cats and small dogs.
- Published
- 2021
14. Evaluation of radiation exposure from fluoroscopic examination in small animal veterinary staff using thermoluminescent dosimeters
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Soon Il Lee, Hyun-Jin Kim, K. Min, S. Lim, Y. Cho, J An, and Kichang Lee
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Radiation exposure ,medicine.medical_specialty ,Dosimeter ,General Veterinary ,business.industry ,Small animal ,Medicine ,Medical physics ,business ,Thermoluminescence ,Veterinary Staff - Published
- 2019
15. Evaluation of the Femoral Stem Implant in Canine Total Hip Arthroplasty: A Cadaver Study
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Yonghwan Kwon, Hyoung Sun Cho, Minsu Kim, Kichang Lee, Namsoo Kim, Youngung Kim, and Jinsu Kang
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medicine.medical_specialty ,General Veterinary ,business.industry ,Cadaver ,Medicine ,Implant ,Femoral stem ,business ,Total hip arthroplasty ,Surgery - Published
- 2019
16. Combined Surgery in a Dog with Heartworm Infection and Complex Fractures
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Namsoo Kim, Youngung Kim, Kichang Lee, Minsu Kim, Hyoungsun Cho, Jinsu Kang, and Yonghwan Kwon
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medicine.medical_specialty ,General Veterinary ,business.industry ,medicine ,Complex fracture ,business ,Surgery - Published
- 2018
17. Radiation exposure during C-arm-guided (fluoroscopy) small animal orthopaedic surgery
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K. Min, M. Kim, Nam-Soo Kim, S. Sung, Y. Cho, Y. Jung, Kichang Lee, and S. Lim
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Radiation exposure ,medicine.medical_specialty ,General Veterinary ,medicine.diagnostic_test ,business.industry ,Small animal ,Orthopedic surgery ,medicine ,Fluoroscopy ,Radiology ,business - Published
- 2018
18. Comparison of dental radiography and computed tomography: measurement of dentoalveolar structures in healthy, small-sized dogs and cats
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Hogyun Jeong, Hyeona Kim, Seung Hee Lee, Junho Han, Taekwon Lee, Young-Kwon Cho, Jeongsu An, and Kichang Lee
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Male ,Dental radiography ,periodontal space ,040301 veterinary sciences ,Mandibular first molar ,Beagle ,0403 veterinary science ,03 medical and health sciences ,Mandibular canine ,Medical Imaging ,Dogs ,stomatognathic system ,Radiography, Dental ,Premolar ,medicine ,pulp cavity ,Animals ,Tooth Socket ,030304 developmental biology ,Orthodontics ,Dental structure ,0303 health sciences ,CATS ,General Veterinary ,Dentition ,medicine.diagnostic_test ,business.industry ,multi-detector computed tomography ,04 agricultural and veterinary sciences ,medicine.anatomical_structure ,Cats ,Original Article ,Female ,Tomography, X-Ray Computed ,business - Abstract
Background Dental diseases are common in dogs and cats, and accurate measurements of dentoalveolar structure are important for planning of treatment. The information that the comparison computed tomography (CT) with dental radiography (DTR) is not yet reported in veterinary medicine. Objectives The purpose of this study was to compare the DTR with CT of dentoalveolar structures in healthy dogs and cats, and to evaluate the CT images of 2 different slice thicknesses (0.5 and 1.0 mm). Methods We included 6 dogs (2 Maltese and 1 Spitz, Beagle, Pomeranian, mixed, 1 to 8 years, 4 castrated males, and 2 spayed female) and 6 cats (6 domestic short hair,8 months to 3 years, 4 castrated male and 2 spayed female) in this study. We measured the pulp cavity to tooth width ratio (P/T ratio) and periodontal space of maxillary and mandibular canine teeth, maxillary fourth premolar, mandibular first molar, maxillary third premolar and mandibular fourth premolar. Results P/T ratio and periodontal space in the overall dentition of both dogs and cats were smaller in DTR compared to CT. In addition, CT images at 1.0 mm slice thickness was generally measured to be greater than the images at 0.5 mm slice thickness. Conclusions The results indicate that CT with thin slice thickness provides more accurate information on the dentoalveolar structures. Additional DTR, therefore, may not be required for evaluating dental structure in small-sized dogs and cats.
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- 2020
19. Diagnostic imaging characteristics of ureteral pseudodiverticulosis in three dogs
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Y. Jung, S. Sung, Kichang Lee, S. Lim, Y. Cho, and K. Min
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medicine.medical_specialty ,General Veterinary ,business.industry ,medicine ,Medical imaging ,Radiology ,business - Published
- 2018
20. Assessment of Xenogenic Bone Plate and Screw using Finite Element Analysis
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Kichang Lee, Beom-Seok Seo, Haebeom Lee, Minsu Kim, Suyoung Heo, and Namsoo Kim
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medicine.medical_specialty ,Materials science ,General Veterinary ,business.industry ,Bone plate ,medicine ,von Mises yield criterion ,Structural engineering ,business ,Finite element method ,Surgery - Published
- 2018
21. Reference Values of Whole Blood Viscosity and Its Correlation with Hematology and Serum Chemistry in Beagle Dogs
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Jun Koh, Dongbin Lee, Kichang Lee, Minsu Kim, and Namsoo Kim
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medicine.medical_specialty ,Hematology ,Chromatography ,General Veterinary ,Globulin ,biology ,Chemistry ,Whole blood viscosity ,Normal values ,Beagle ,Viscosity ,Reference values ,Internal medicine ,biology.protein ,medicine ,Serum chemistry - Published
- 2018
22. Bronchoalveolar lavage affects computed tomographic and radiographic characteristics of the lungs in healthy dogs
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Yechan Jung, Kyungjun Min, Sohee Lim, Young-Kwon Cho, Suneui Sung, and Kichang Lee
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Male ,Time Factors ,040301 veterinary sciences ,Radiographic imaging ,Radiography ,Pulmonary disease ,Bronchoalveolar Lavage ,Computed tomographic ,0403 veterinary science ,03 medical and health sciences ,Dogs ,0302 clinical medicine ,medicine ,Animals ,Prospective Studies ,Lung ,General Veterinary ,medicine.diagnostic_test ,business.industry ,04 agricultural and veterinary sciences ,respiratory system ,respiratory tract diseases ,Bronchoalveolar lavage ,medicine.anatomical_structure ,030228 respiratory system ,Female ,Radiography, Thoracic ,Tomography, X-Ray Computed ,business ,Airway ,Nuclear medicine ,Thoracic Radiography - Abstract
Bronchoalveolar lavage is a common diagnostic test for dogs with suspected pulmonary disease, however there is no published information on whether this procedure could affect the imaging characteristics of the lungs. Aims of this prospective experimental study were to describe computed tomography (CT) and radiographic features of the lungs after bronchoalveolar lavage in a sample of healthy dogs. Thoracic CT and radiographic images of eight healthy Beagles were acquired at the following time points: before bronchoalveolar lavage, immediately following bronchoalveolar lavage, and at 2, 4, 8, 12, and 24 h following bronchoalveolar lavage. Lung consolidation or interstitial patterns were seen in CT and radiographic images immediately after the procedure. Radiographic lung patterns resolved within 2 h and CT patterns resolved within 24 h. Resolution of the CT pulmonary patterns in the ventral areas of the lungs was delayed compared to the dorsal areas. Mean CT imaging scores differed over time (P < 0.001), while mean radiographic imaging scores did not differ over time. This study suggests that thoracic radiography and CT imaging assessments should precede bronchoalveolar lavage procedures if possible, or be performed at least 24 h afterward.
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- 2018
23. Computed tomographic features of tracheal shapes and dimensions in awake dogs
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Y. Jung, J. Jeong, H. Oh, Y. Choi, K. Kim, Y. Cho, Kichang Lee, S. Sung, H.G. Heng, and S. Lim
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0403 veterinary science ,03 medical and health sciences ,0302 clinical medicine ,General Veterinary ,040301 veterinary sciences ,business.industry ,Medicine ,04 agricultural and veterinary sciences ,respiratory system ,Nuclear medicine ,business ,030218 nuclear medicine & medical imaging ,Computed tomographic - Published
- 2018
24. Restrainer exposure to scatter radiation in practical small animal radiography measured using thermoluminescent dosimeters
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Y. Cho, H. Oh, Kichang Lee, S. Sung, Y. Jung, and S. Lim
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Dosimeter ,General Veterinary ,040301 veterinary sciences ,business.industry ,Radiography ,04 agricultural and veterinary sciences ,Thermoluminescence ,030218 nuclear medicine & medical imaging ,0403 veterinary science ,03 medical and health sciences ,0302 clinical medicine ,Small animal ,Medicine ,Scatter radiation ,business ,Nuclear medicine - Published
- 2018
25. Minimally Invasive Treatment for Sacroiliac Dislocation in Dogs
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Minsu Kim, Hyoungsun Cho, Youngung Kim, Sun-Young Kim, Kichang Lee, and Namsoo Kim
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Sacroiliac joint ,medicine.medical_specialty ,medicine.anatomical_structure ,General Veterinary ,business.industry ,medicine ,Dislocation ,business ,Surgery - Published
- 2017
26. Atypical radiographic features of multiple myeloma in a dog: a case report
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Y. Choi, H. Oh, Kichang Lee, S. Lim, K. Kim, and S. Sung
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musculoskeletal diseases ,medicine.medical_specialty ,General Veterinary ,business.industry ,Radiography ,medicine ,Radiology ,musculoskeletal system ,business ,medicine.disease ,Multiple myeloma - Published
- 2017
27. Feasibility of dental panoramic radiography for dental arch evaluation in small animals
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Y. Cho, H. Oh, Y. Jung, E. Jeong, J. Jeong, Y. Choi, Kichang Lee, and K. Kim
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0301 basic medicine ,Dental panoramic ,General Veterinary ,040301 veterinary sciences ,business.industry ,Radiography ,Dentistry ,04 agricultural and veterinary sciences ,0403 veterinary science ,stomatognathic diseases ,03 medical and health sciences ,Skull ,Dental arch ,030104 developmental biology ,medicine.anatomical_structure ,stomatognathic system ,medicine ,business - Published
- 2017
28. Chronological low field magnetic resonance appearance of canine spinal epidural hemorrhage model
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Jimo Jeong, Kichang Lee, Yechan Jung, and YoungKown Cho
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Time Factors ,Inversion recovery ,Fluid-attenuated inversion recovery ,Spinal epidural hemorrhage ,Dogs ,hyperintensity ,medicine ,Animals ,Dog Diseases ,low field MR ,General Veterinary ,medicine.diagnostic_test ,business.industry ,Magnetic resonance imaging ,Spinal cord ,Hematoma, Epidural, Spinal ,Magnetic Resonance Imaging ,Hyperintensity ,Spinal epidural ,medicine.anatomical_structure ,Spinal Cord ,dog ,Spinal cord lesion ,Original Article ,Female ,Lower field ,business ,Nuclear medicine - Abstract
The magnetic resonance (MR) features of spinal epidural hemorrhage depending with the passage of time have a meaning in veterinary medicine. The aim of this study is to propose the characteristic MR image of spinal epidural hemorrhage using a lower field permanent magnet scanner in dogs. A total of 8 clinically normal beagle dogs, weighing about 9 kg, were allocated. After a baseline MR examination, spinal epidural hemorrhage was created. MR scanning was executed on days 1, 2, 3, 4, 5, 10, 15, 20, 25, and 30 using 0.25 Tesla low field MR. Transverse MR images were attained for image examination. T2W, T1W, fluid-attenuated inversion recovery (FLAIR), short tau inversion recovery (STIR), and T2*-GRE sequences were used. Images were compared subjectively for signal transition assessment. Spinal epidural hemorrhage models were produced positively in 8 dogs at the T12 to L2 region. Initially, the spinal cord and epidural lesions were hyper-intense on T2W and T1W images. On T2W, FLAIR and STIR images, the spinal cord lesion was steadily hyperintense. No significant and consistent hypointense signal indicating hemorrhage was seen on T2*-GRE images. This study result suggests that relatively consistent hyperinstensity on T2 and FLAIR is observed for 30 days, meanwhile T2*-GRE imaging is less useful in hemorrhage detection.
- Published
- 2018
29. Diagnostic imaging features of normal anal sacs in dogs and cats
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Kichang Lee, Ul Soo Choi, Jimo Jeong, Sangjun Park, Eunseok Jeong, Min-Su Kim, Yechan Jung, and Nam-Soo Kim
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0301 basic medicine ,040301 veterinary sciences ,Radiography ,Beagle ,0403 veterinary science ,03 medical and health sciences ,Dogs ,Reference Values ,medicine ,Medical imaging ,Animals ,Anal Sacs ,CATS ,General Veterinary ,medicine.diagnostic_test ,business.industry ,Ultrasound ,Echogenicity ,low-field magnetic resonance imaging ,Magnetic resonance imaging ,04 agricultural and veterinary sciences ,Anatomy ,ultrasonography ,Magnetic Resonance Imaging ,anal sac ,Contrast medium ,Cats ,Original Article ,030101 anatomy & morphology ,business ,dogs and cats - Abstract
This study was conducted to provide normal reference features for canine and feline anal sacs using ultrasound, low-field magnetic resonance imaging (MRI) and radiograph contrast as diagnostic imaging tools. A total of ten clinically normal beagle dogs and eight clinically normally cats were included. General radiography with contrast, ultrasonography and low-field MRI scans were performed. The visualization of anal sacs, which are located at distinct sites in dogs and cats, is possible with a contrast study on radiography. Most surfaces of the anal sacs tissue, occasionally appearing as a hyperechoic thin line, were surrounded by the hypoechoic external sphincter muscle on ultrasonography. The normal anal sac contents of dogs and cats had variable echogenicity. Signals of anal sac contents on low-field MRI varied in cats and dogs, and contrast medium using T1-weighted images enhanced the anal sac walls more obviously than that on ultrasonography. In conclusion, this study provides the normal features of anal sacs from dogs and cats on diagnostic imaging. Further studies including anal sac evaluation are expected to investigate disease conditions.
- Published
- 2016
30. A challenging radiographic diagnosis - extraluminal leiomyoma of the oesophagus in a small-sized dog: a case report
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Ju-Young Jung, Y. Cho, M. Kim, Y. Jung, Kichang Lee, K. Kim, Nam-Soo Kim, H. Oh, Y. Choi, and E. Jung
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Pathology ,medicine.medical_specialty ,Leiomyoma ,General Veterinary ,business.industry ,Radiography ,medicine ,Radiology ,business ,medicine.disease - Published
- 2016
31. IMAGING DIAGNOSIS-ENDOMETRIAL MINERALIZATION IN A DOG
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Kyungeun Kim, Yeji Choi, Eunseok Jeong, Nam-Soo Kim, Min-Su Kim, Kichang Lee, Hyunsuk Oh, and Rommel M. Tan
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medicine.medical_specialty ,Pathology ,Hysterectomy ,General Veterinary ,040301 veterinary sciences ,business.industry ,medicine.medical_treatment ,Mammary gland ,0402 animal and dairy science ,Soft tissue ,04 agricultural and veterinary sciences ,Abdominal cavity ,Cystic Endometrial Hyperplasia ,Pyometra ,medicine.disease ,040201 dairy & animal science ,Endometrial hyperplasia ,0403 veterinary science ,medicine.anatomical_structure ,medicine ,Histopathology ,business - Abstract
A 9-year-old intact female mixed breed dog was presented for mammary gland tumor surgery, and preoperative radiographs showed a tubular soft tissue opacity mass with multifocal mineralization in the caudoventral abdominal cavity. Subsequent ultrasonography demonstrated uterine dilation with echogenic fluid and endometrial acoustic shadowing consistent with mineralization. Resection of mammary gland tumors and ovariohysterectomy were performed. Pyometra was diagnosed on cytologic examination of uterine fluid. Histopathology of the uterine tissue confirmed a diagnosis of cystic endometrial hyperplasia with uterine mineralization.
- Published
- 2016
32. Time-dependent low-field MRI characteristics of canine blood: an in vitro study
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Eunseok Jeong, Young-Kwon Cho, Sangjun Park, Jimo Jeong, Yechan Jung, Nam-Soo Kim, Kichang Lee, and Min-Su Kim
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medicine.medical_specialty ,Pathology ,040301 veterinary sciences ,canine ,Hemorrhage ,Fluid-attenuated inversion recovery ,Beagle ,030218 nuclear medicine & medical imaging ,Time ,0403 veterinary science ,magnetic resonance ,03 medical and health sciences ,0302 clinical medicine ,Dogs ,Internal medicine ,medicine ,In vitro study ,Animals ,Blood Coagulation ,low field ,Hematoma ,Hematology ,General Veterinary ,medicine.diagnostic_test ,business.industry ,Magnetic resonance imaging ,in vitro ,Thrombosis ,04 agricultural and veterinary sciences ,Venous blood ,Low field mri ,Blood Physiological Phenomena ,Magnetic Resonance Imaging ,Blood ,Original Article ,Female ,Nuclear medicine ,business ,Blood sampling - Abstract
This study was conducted to assess time-sensitive magnetic resonance (MR) changes in canine blood using low-field MR. Arterial and venous blood samples were collected from eight healthy beagle dogs. Samples were placed in 5-mL tubes and imaged within 3 hours of collection at 1 day intervals from day 1 to day 30. The following sequences were used: T1-weighted (T1W), T2-weighted (T2W), fluid-attenuated inversion recovery (FLAIR), short tau inversion recovery (STIR), and T2-star gradient-echo (T2(*)-GRE). Visual comparison of the images revealed that four relatively homogenous blood clots and twelve heterogeneous blood clots developed. The margination of the clot and plasma changed significantly on day 2 and day 13. On day 2, heterogeneous blood clots were differentiated into 2 to 3 signal layers in the T2W, T1W, and especially the STIR images. Hypointense signal layers were also detected in the blood clots in STIR images, which have T2 hypo, FLAIR hypo, and T1 hyper intense signals. In all images, these signal layers remained relatively unchanged until day 13. Overall, the results suggest that hematomas are complex on low-field MRI. Accordingly, it may not be feasible to accurately characterize hemorrhages and predict clot age based on low-field MRI.
- Published
- 2016
33. Determination of Pelvic Limb Alignment in Small-breed Dogs
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Seong Mok Jeong, Haebeom Lee, Suyoung Heo, Kichang Lee, Ji-Young Na, Jooho Kim, and Nam-Soo Kim
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body regions ,Yorkshire Terrier ,General Veterinary ,business.industry ,Radiography ,Medicine ,Tarsal Joint ,Anatomy ,Pelvic limb ,Cadaveric spasm ,business ,Breed - Abstract
The present study determined the normal reference ranges for overall pelvic limb alignment of small-breed dogs. For this purpose, 60 cadaveric canine pelvic limbs from normal small-breed dogs (Maltese, Poodle, Shih Tzu, Yorkshire Terrier). A frontal full-limb radiograph of each pelvic limb was obtained, and mechanical tibiofemoral angle (mTFA), mechanical metatarsotibial angle (mMTTA), mechanical axis-femur angle (MAFA), and mechanical axismetatarsus angle (MAMTA) were measured from each radiograph, along with mechanical deviation of the stifle (SMAD) and tarsal joints (TMAD). The 95% CI for radiographic values of all pelvic limbs were mTFA, 5.7-7.4; mMTTA, −2.2 - −0.8°; MAFA, 3.5-4.5°; MAMTA, 1.0-2.0; SMAD, 2.1-2.7%; TMAD, 0.5-1.0%. There values varied among the breeds, except for mTFA. The reference ranges can be used for diagnosing pelvic limb deformities in small-breed dogs and for planning corrective osteotomies.
- Published
- 2015
34. Pelvic Symphyseal Distraction Osteotomy for Constipation Management Secondary to Pelvic Stenosis
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Sung-jin Choi, Haebeom Lee, Kwangseon Oh, Minsu Kim, Kichang Lee, and Namsoo Kim
- Subjects
medicine.medical_specialty ,Constipation ,General Veterinary ,business.industry ,Symphysis ,medicine.medical_treatment ,Rectum ,Osteotomy ,medicine.disease ,Surgery ,body regions ,Stenosis ,medicine.anatomical_structure ,Bone plate ,medicine ,Pelvic fracture ,Malunion ,medicine.symptom ,business - Abstract
A 7-year-old neutered male Korean domestic short-haired cat was referred to our clinic to treat constipation which had persisted for 6 months. The rectal examination revealed narrowing of the right lateral portion of the pelvic canal. A reduced pelvic canal diameter by pelvic fracture malunion was revealed on radiography. The pelvic canal diameter ratio measured from preoperative was 0.68. Based on rectal and radiographic examinations, constipation caused by pelvic canal narrowing was confirmed. Pelvic symphyseal distraction-osteotomy and iliac wedge osteotomy were performed. An iliac osteotomy of the ilium was performed to ease the pelvic symphyseal distraction. After the symphysis was split longitudinally, pelvic symphyseal distraction was maintained by using a spacer made of poly-methylmethacrylate. The osteotomy of the ilium was fixed using a bone plate and screws. Increased pelvic canal diameter was confirmed on post-operative radiography and the postoperative pelvic canal diameter ratio was 0.91. The patient received antibiotics, NSAIDs, crystalloids and Lactulose for post-operative care. The cat recovered normal defecation abilities and did not have constipation at one week postoperatively. No episodes of constipation persisting longer than 6 months have been reported by owners in previous studies. Pelvic symphyseal distraction osteotomy and iliac wedge osteotomy may prove to be a useful surgical procedure to treat pelvic canal stenosis that is caused by pelvic fracture malunion.
- Published
- 2014
35. Hemodynamic Evaluation of Acute Mitral Valve Insufficiency Model induced by Chordae Tendinae Rupture in Normal Dogs
- Author
-
Minsu Kim, Namsoo Kim, Kichang Lee, Jong Min Kim, and Sehoon Kim
- Subjects
medicine.medical_specialty ,Mean arterial pressure ,Cardiac output ,General Veterinary ,business.industry ,Cardiac index ,Hemodynamics ,Blood pressure ,medicine.anatomical_structure ,Ventricle ,Internal medicine ,Mitral valve ,cardiovascular system ,medicine ,Cardiology ,Pulmonary wedge pressure ,business - Abstract
The study was to observe hemodynamic alterations of cardiac function to design a model of canine mitral valve insufficiency (MVI) based on chordae tendinae rupture (CTR). Ten healthy beagles with normal heart function were used in this study. To measure hemodynamics, the patient monitor was equipped for invasive blood pressure and a Swan-Ganz catheter. Hemodynamic alterations were checked promptly during CTR procedures. MVI model was made by transection of the chordae tendinae with small arthroscopy hook knife through 5 t h intercostal open chest. Color Doppler at the level of the mitral valve showed high-velocity regurgitant flow immediately after CTR at intraoperative echocardiography. In hemodynamic measurements, pulmonary capillary wedge pressure (PCWP) was significantly increased, while mean arterial pressure (MAP), venous pressure (VP), pulmonary arterial pressure (PAP), cardiac output (CO) and cardiac index (CI) were significantly decreased after CTR. It was known that the left atrium was overloaded by regurgitant volume from the left ventricle. In conclusion, the MVI model induced by CTR technique in this study should be used as suitable one for the effective research of canine mitral valve disease. Further study should be needed to measure the chronic alternation of mitral valve in the model.
- Published
- 2014
36. Treatment of Recurrent Coxofemoral Joint Luxation by Total Hip Replacement in a Dog
- Author
-
Suyoung Heo, Kichang Lee, Haebeom Lee, Jooho Kim, Namsoo Kim, and Min-Su Kim
- Subjects
musculoskeletal diseases ,medicine.medical_specialty ,Crepitus ,General Veterinary ,medicine.diagnostic_test ,business.industry ,medicine.medical_treatment ,Total hip replacement ,Physical examination ,Thigh ,Radiological examination ,Surgery ,medicine.anatomical_structure ,Lameness ,medicine ,medicine.symptom ,business ,Reduction (orthopedic surgery) ,Coxofemoral Joint - Abstract
A 7-year-old, intact female Golden Retriever weighing 38 ㎏ was referred for left coxofemoral joint luxation. On physical examination, pain and crepitus were noted atthe left hip joint during joint extension. Radiological examination revealed coxofemoral joint luxation and mild degenerative bone changes in the left hip joint. We performed minimally invasive arthroscopy-assisted reduction with TightRope ® as a treatment option; however, the left coxofemoral joint was reluxated after one month postoperatively. We performed cementless total hip replacement (THR) of the luxated left coxofemoral joint. At tenmonths after surgery, the dog could sit, stand, walk normally and jump comfortably without lameness. The thigh girth measurement of the operated limb was 108.6% of the contralateral limb. Based on the present case, THR can be a successful treatment for coxofemoral joint luxation in dogs with failed coxofemoral joint reduction.
- Published
- 2014
37. Surgical management of ileocecocolic intussusception in a Korean native calf: a case report
- Author
-
M. S. Kim, H. B. Lee, Kichang Lee, D. B. Lee, S. M. Shin, and Nam-Soo Kim
- Subjects
medicine.medical_specialty ,General Veterinary ,medicine.diagnostic_test ,040301 veterinary sciences ,business.industry ,0402 animal and dairy science ,Ileum ,Physical examination ,04 agricultural and veterinary sciences ,Anastomosis ,Abdominal distension ,medicine.disease ,040201 dairy & animal science ,Surgery ,0403 veterinary science ,Lesion ,Cecum ,medicine.anatomical_structure ,Intussusception (medical disorder) ,Medicine ,Large intestine ,medicine.symptom ,business - Abstract
A two-month-old male 40 kg Korean native calf was referred to the Chonbuk Animal Medical Centre, College of Veterinary Medicine, Chonbuk National University because of prolonged diarrhoea, depres - sion, and anorexia lasting three weeks. On physical examination, abdominal distension presented in the right flank and a percussion sound was audible. A round-shaped lesion was observed in the area of the large intestine on computed tomography and ultrasonography, and a diagnosis of intestinal intussusception was made. A surgi - cal operation was decided upon immediately to correct the intussusception. An infarct lesion was found during surgery, and the lesion was observed on the intussuscepted intestines including the cecum, ileum, and colon. The area of intussusception was excised, and an anastomosis was performed. Despite intensive and supportive care, the patient died one day after the surgery due to poor general condition. An ileocecocolic intussusception is an uncommon case compared within other intestinal intussusceptions. Most affected calves have a history of severe diarrhoea and the prognosis is guarded due to poor general condition. Good survival can be expected if patients are diagnosed quickly.
- Published
- 2013
38. Augmentation of ruptured tendon using fresh frozen Achilles tendon allograft in two dogs: a case report
- Author
-
Suyoung Heo, H. B. Lee, Md. Rafiqul Alam, Nam-Soo Kim, W. J. Gordon, Kichang Lee, and M. S. Kim
- Subjects
musculoskeletal diseases ,030222 orthopedics ,Achilles tendon ,medicine.medical_specialty ,Flexor Carpi Ulnaris ,General Veterinary ,business.industry ,030229 sport sciences ,Hindlimb ,Anatomy ,musculoskeletal system ,medicine.disease_cause ,Tendon ,Weight-bearing ,Surgery ,03 medical and health sciences ,0302 clinical medicine ,medicine.anatomical_structure ,Suture (anatomy) ,Medicine ,Tibia ,Contracture ,medicine.symptom ,business - Abstract
This article describes two cases of augmentation of ruptured tendon with fresh frozen Achilles tendon allograft (FFATA) in dogs. Case 1 was a two-year-old crossbreed dog (29 kg) that presented with an open wound on the right forelimb and with complete rupture of the flexor carpi ulnaris and superficial digital flexor tendons. Case 2 was a four-year-old crossbreed dog (4 kg) with partial ruptures of the patellar tendon and detachment of the tibial tuberosity in the right hind limb. In both cases, the ends of the ruptured tendon were sutured and apposed after debridement. To minimize suture failure, FFATA (cut to sufficient size) was placed across the primary suture with tension and sutured to the host tendon. In addition, Case 2 received a Krackow suture through a transverse bone tunnel made in the tibia to fix the patellar tendon along with the tibial tuberosity in situ. The surgical areas healed without any evidence of exaggerated inflammatory response or clinical signs consistent with rejection of the allograft. Both the dogs had normal ambula - tion and weight bearing on the affected limb 12 weeks postoperatively. No postoperative complications were observed during a one-year follow up period except for slight contracture of the carpus and digits of the affected limb in Case 1. Thus, ruptured tendons can be successfully repaired using suture and augmentation with FFCTA. Augmentation with FFATA may provide additional stability, which counters tension on the primary repair and reduces the chance of gap formation or suture failure in case of reconstruction of the damaged tendon in dogs.
- Published
- 2013
39. Virtual otoscopy for evaluating the inner ear with a fluid-filled tympanic cavity in dogs
- Author
-
Haebeom Lee, Min-Su Kim, Kichang Lee, Nam-Soo Kim, Jimo Jeong, and Youngkwon Cho
- Subjects
Male ,Eustachian tube ,virtual otoscopy ,Incus ,Ear, Middle ,Otoscopy ,Dogs ,otorhinolaryngologic diseases ,Image Processing, Computer-Assisted ,Medicine ,Animals ,Tympanic cavity ,Ear canal ,Dog Diseases ,General Veterinary ,Ossicles ,business.industry ,Otitis Media with Effusion ,computed tomography ,otitis media ,Anatomy ,medicine.anatomical_structure ,Otitis ,Ear, Inner ,dog ,Middle ear ,Original Article ,medicine.symptom ,business ,Tomography, X-Ray Computed ,Bulla (amulet) - Abstract
The feasibility of virtual otoscopy (VO) imaging was evaluated in five dogs with experimentally induced otitis media, two control dogs, and two canine patients with otitis media. VO images of the tympanic cavity and ossicles were generated with commercially available software using raw computed tomography (CT) data. Eight out of 10 ears inoculated with pathogen exhibited obvious clinical signs associated with otitis externa. CT images revealed soft tissue density material occupying the tympanic bulla compatible with otitis media in three dogs with experimentally induced otitis media and two patients. No remarkable features were observed on the radiographs. Four different VO views (ear canal, tympanic bulla, eustachian tube, and ossicular chain) were created. Promontory, cochlea window, tympanic, and septum bulla as well as ossicles were easily and clearly distinguished except for the incus and stapes of the clinical patients. VO images were not more suitable than images created with conventional CT for accurately diagnosing otitis media in this study. However, it appears that VO could be more feasible for assessing the complex structure of the inner ear in dogs with fluid-filled tympanic cavities since fluid accumulation within the tympanic bulla did not affect the evaluation of bony tissue in the middle ear on VO images.
- Published
- 2012
40. FEASIBILITY OF COMPUTED TOMOGRAPHY IN AWAKE DOGS WITH TRAUMATIC PELVIC FRACTURE
- Author
-
Jacob J. Rohleder, Kichang Lee, James F. Naughton, Jimo Jeong, and Hock Gan Heng
- Subjects
medicine.medical_specialty ,Lateral recumbency ,General Veterinary ,medicine.diagnostic_test ,business.industry ,Sedation ,Radiography ,Computed tomography ,medicine.disease ,Pelvic trauma ,Ct examination ,Pelvic fracture ,Medicine ,Radiology ,Tomography ,medicine.symptom ,business - Abstract
In veterinary medicine, general anesthesia or sedation is generally required to immobilize patients during computed tomography (CT) scanning. This may not be suitable in all patients because of risks of anesthesia. We evaluated the feasibility of pelvic CT examination in 14 awake animals with pelvic trauma. Physical restraint was applied by wrapping the patient in a towel and then taping to the CT table or by directly taping the patient to the CT table. The effect of patient positioning, cooperation on the CT table, preparation time for scanning, scanning time, frequency of repeat scans, image quality, and complications related to physical restraint were evaluated. Fractures were recorded and compared between radiography and CT. Ten of 14 dogs were scanned in lateral recumbency and four in sternal recumbency. All patients were cooperative with the exception of one that moved slightly during the scan. Both physical restraint methods were adequate for CT scanning. Patient preparation took less than 5 min while the scan time was typically less than 1 min. No repeat scans were required in any patient. The transverse CT image quality was good (10/14) or fair (4/14) for interpretation. When comparing the CT images to radiographs, more pelvic fractures were identified with CT than with radiography and a few patients were overdiagnosed based on radiographs. No complications or additional injuries associated with physical restraint were noticed.
- Published
- 2012
41. Effect of topical anesthesia on evaluation of corneal sensitivity and intraocular pressure in rats and dogs
- Author
-
Hyung-Seop Kim, Nam-Soo Kim, Jury Kim, Kichang Lee, Haebeom Lee, and Min-Su Kim
- Subjects
Corneal sensation ,Intraocular pressure ,medicine.medical_specialty ,genetic structures ,General Veterinary ,business.industry ,Corneal Touch ,Beagle ,eye diseases ,Animal groups ,Topical anesthesia ,Ophthalmologic examination ,Corneal Sensitivity ,Anesthesia ,Ophthalmology ,medicine ,sense organs ,business - Abstract
Objective To determine the effect of 0.5% proparacaine in tonometry by evaluating corneal touch threshold (CTT) and intraocular pressure (IOP). Animal studied Nine rats (18 eyes, Sprague–Dawley) and 10 dogs (20 eyes, Beagle) Procedures The IOP and CTT were measured in each eye before and after topical anesthesia with 0.5% proparacaine. The IOP was evaluated using Tonopen for dogs and Tonolab for rats. The corneal sensitivity was evaluated by CTT through a Cochet–Bonnet aesthesiometer. Results The mean IOP was not significantly changed in rats or dogs before and after topical anesthesia. However, after application of proparacaine, CTT was significantly increased in both animal groups compared with that before application of proparacaine. Conclusion From this study, topical anesthesia was found to significantly lower the corneal sensitivity but have little effect on IOP measurements. In ophthalmologic examination, topical anesthesia can be used to reduce corneal sensation without an effect on IOP.
- Published
- 2012
42. Three-dimensional computed tomographic volume rendering imaging as a teaching tool in veterinary radiology instruction
- Author
-
Y. Cho, Nam-Soo Kim, M. S. Kim, H. B. Lee, J. Kim, and Kichang Lee
- Subjects
Thorax ,medicine.medical_specialty ,Veterinary medicine ,040301 veterinary sciences ,Radiography ,education ,Computed tomography ,Computed tomographic ,0403 veterinary science ,03 medical and health sciences ,0302 clinical medicine ,Teaching tool ,medicine ,030212 general & internal medicine ,Radiographic anatomy ,General Veterinary ,medicine.diagnostic_test ,business.industry ,Volume rendering ,04 agricultural and veterinary sciences ,respiratory system ,respiratory tract diseases ,medicine.anatomical_structure ,Abdomen ,Radiology ,business - Abstract
The educational value of three-dimensional computed tomography (3D CT) volume rendering imaging was compared to conventional plain radiographic instruction in a veterinary radiology class. Veterinary radiology is an important subject in veterinary medicine and has been well-recognized as a primary diagnostic method. Many junior and senior students have difficulty interpreting two dimensional radiographs that depict three-dimensional organs. A total of 158 junior veterinary students with knowledge of anatomy, pathology, physiol - ogy, and other basic subjects were divided into two groups; Group 1 (n = 45) received conventional radiographic instruction using normal and representative abnormal canine thoracic and abdominal radiographs followed by repetition of the same one week later, while Group 2 (n = 113) received plain radiograph instruction as in Group 1 followed by volume-rendered 3D CT images from the same canine patient one week later. The evaluations were performed at the end of each instruction. In Group 1, the majority did not understand the radiographic signs and no significant improvement was observed. In Group 2, 13% and 20% of the students learned only from radiographs, and understood the thoracic and abdominal radiographic alterations, respectively. After studying the 3D CT images, more than 94% of the students deduced the reasons for the radiographic alterations on the radiographs (P < 0.001). These results strongly suggest that 3D CT imaging is an effective tool for teaching radiographic anatomy to veterinary medical students.
- Published
- 2010
43. Successful treatment of an unusually large corneal epithelial inclusion cyst using equine amniotic membrane in a dog
- Author
-
Haebeom Lee, Sehoon Kim, Jaegwan Cha, Min-Su Kim, Philippe Labelle, Nam-Soo Kim, Kichang Lee, Jury Kim, and Ul Soo Choi
- Subjects
Male ,Pathology ,medicine.medical_specialty ,CORNEAL LESION ,genetic structures ,Corneal Diseases ,Epithelial inclusion cyst ,Dogs ,Cornea ,medicine ,Animals ,Amnion ,Dog Diseases ,Horses ,Superficial keratectomy ,Intact male ,General Veterinary ,Cysts ,business.industry ,Epithelium, Corneal ,Histology ,eye diseases ,Transplantation ,medicine.anatomical_structure ,sense organs ,Complication ,business - Abstract
A 10-year-old intact male Yorkshire Terrier was referred for investigation of a large raised and nonpainful corneal lesion oculus dexter. Clinical examination revealed a pale, translucent corneal mass, which occupied half of the corneal surface and measured 11 mm x 11 mm x 13 mm. The mass was removed by superficial keratectomy and equine amniotic membrane (AM) was transplanted into the large corneal defect to cover the wound and provide tectonic support for the remaining cornea. The mass was histologically confirmed as a corneal epithelial inclusion cyst. There was no evidence of recurrence or complication at the surgical site 100 days postoperatively. Corneal epithelial inclusion cysts are uncommon in dogs. Although superficial keratectomy is the recommended treatment for corneal inclusion cyst, the combination of superficial keratectomy and AM transplantation had to be considered as an alternative for repair of large corneal defects. This is the first case report of the combined application of AM and superficial keratectomy to successfully treat a corneal inclusion cyst in a dog.
- Published
- 2010
44. A serological survey of avian origin canine H3N2 influenza virus in dogs in Korea
- Author
-
Dongsuk Kang, Jinsik Oh, Gunsuk Na, Daesub Song, Kwonil Jung, Kichang Lee, Bo-Kyu Kang, Bong-Kyun Park, Chul Seung Lee, and Jungeun Yoo
- Subjects
viruses ,Canine influenza ,Orthomyxoviridae ,Disease ,Antibodies, Viral ,medicine.disease_cause ,Microbiology ,Virus ,Disease Outbreaks ,Serology ,Dogs ,Orthomyxoviridae Infections ,Seroepidemiologic Studies ,Influenza A virus ,medicine ,Animals ,Dog Diseases ,Korea ,General Veterinary ,biology ,Influenza A Virus, H3N2 Subtype ,virus diseases ,General Medicine ,biology.organism_classification ,Virology ,Population Surveillance ,biology.protein ,Antibody - Abstract
Canine H3N2 influenza viruses of avian origin were recently isolated and found to induce disease in dogs. Results of serologic analysis indicate that avian origin canine influenza virus can spread rapidly through local dog populations, which indicates its potential for becoming established in dogs throughout Korea.
- Published
- 2009
45. Biomechanical assessment of freeze-dried allograft cortical bone plate graft in canine bone defect model
- Author
-
M. S. Kim, C. S. Na, Nam-Soo Kim, H. B. Lee, Suyoung Heo, and Kichang Lee
- Subjects
Bone mineral ,Materials science ,General Veterinary ,Bone density ,business.industry ,0206 medical engineering ,Ulna ,Dentistry ,030206 dentistry ,02 engineering and technology ,Bone fracture ,Bone healing ,medicine.disease ,020601 biomedical engineering ,03 medical and health sciences ,0302 clinical medicine ,medicine.anatomical_structure ,Fracture fixation ,Bone plate ,medicine ,Cortical bone ,business ,Biomedical engineering - Abstract
Freeze-dried cortical bone can be used as a biological plate, either alone or in combination with other internal fixation devices, to stabilize fractures. In addition to it conferring mechanical stability, freeze-dried cortical bone may enhance fracture-healing and increase the bone stock. This study examined the effect of a freeze-dried allograft cortical bone plate (FACBP) on the biomechanical properties of an implant site in a canine bone defect model. Twelve adult mongrel dogs (around 4.8 kg) were used. A segmental critical-size defect (5 mm in length) at ulna diaphysis was created using an oscillating saw. The experimental animals were divided into two groups: eight dogs treated with an absorbable bone plate (FACBP) fixed by metal bone screws (Group A) and four dogs treated with a commercial stainless steel bone plate and metal bone screws (Group B). Bone healing was assessed by radiography, Dual-energy x-ray absorptiometry and a three-point bending test. The FACBP incorporated in the host bone produced complete remodeling of the cortical bone. There was no significant difference in the bone mineral density and biomechanical tests between the FACBP application site and normal ulna or a stainless steel bone plate of the ulna. These results suggest that FACBP facilitates recovery from a bone fracture by assisting in the induction of new bone formation in a defected fracture.
- Published
- 2009
46. VIRTUAL CT OTOSCOPY OF THE MIDDLE EAR AND OSSICLES IN DOGS
- Author
-
In-Shik Kim, Sang-hun Park, Hyo Sung Kwak, Kidong Eom, Hyewon Kang, Nam-Soo Kim, Haebeom Lee, Jungkee Kwon, Kichang Lee, and Hyung-Sub Kang
- Subjects
General Veterinary ,Ossicles ,business.industry ,Eustachian tube ,Incus ,Malleus ,Anatomy ,medicine.anatomical_structure ,Middle ear ,Medicine ,Ear canal ,business ,Bulla (amulet) ,Stapes - Abstract
Virtual otoscopy enables noninvasive 3D endoluminal imaging of the middle ear through postprocessing of computed tompgraphy (CT) data. A standardized imaging approach for the middle ear was established in six normal dogs in an attempt to optimize the clinical application and student education. High-resolution CT data were obtained. Virtual otoscopic images of the middle ear cavity and ossicles were generated using commercially available software. The views of the four different directions (the ear canal, tympanic bulla, eustachian tube, and ossicular chain) were made for virtual otoscopy. The promontory, cochlea window, tympanic bulla, septum bulla, and auditory tube were distinguished easily and clearly. One of the ossicles, the malleus, was visualized accurately. However, small structures such as the incus and stapes always could not be seen. The main advantage of virtual otoscopy is not only to provide diagnostic information but also to enhance the quality and efficiency of student education, because it contributes to an understanding of the anatomy of the middle ear. We describe the normal topographical 3Dimages of the middle ear of the dog using virtual otoscopy.
- Published
- 2008
47. Use of an Aortic Stent Graft Extension for the Treatment of Urethral Stricture in a Dog
- Author
-
Min-Su Kim, Ji Mo Jung, Ye Chan Jung, Haebeom Lee, Nam-Soo Kim, Yonghwan Kwon, Jaehyun Bae, and Kichang Lee
- Subjects
Male ,medicine.medical_specialty ,Urethral stricture ,medicine.medical_treatment ,Urinary system ,Urology ,canine ,Urinary incontinence ,Aortic stent ,Dogs ,Oliguria ,medicine ,Animals ,self-expanding aortic stent graft extension ,Urethral Stricture ,Surgical repair ,General Veterinary ,business.industry ,Stent ,Abdominal distension ,Note ,medicine.disease ,Surgery ,expanded polytetrafluoroethylene (ePTTE) ,Stents ,medicine.symptom ,business - Abstract
A 2-year-old male mixed dog was referred to us for further evaluation and treatment of a 4-week-history of oliguria and abdominal distension after a surgical repair of urethral injury. To relieve the urethral stricture, we placed a self-expanding aortic stent graft extension with a partial coverage with an expanded polytetrafluoroethylene (ePTFE). After the placement of the stent, the dog presented with a normal urinary voiding, despite the presence of urinary incontinence. The current case indicates that the ePTFE-covered, self-expanding ASGE is an effective intervention for the treatment of severe urethral stricture in the dog.
- Published
- 2013
48. Spectral waveform analysis of major arteries in conscious dogs by Doppler ultrasonography
- Author
-
Junghee Yoon, Mincheol Choi, Juhyun Jung, and Kichang Lee
- Subjects
Male ,medicine.medical_specialty ,Hemodynamics ,Femoral artery ,Iliac Artery ,Dogs ,Reference Values ,medicine.artery ,Internal medicine ,Basilar artery ,Animals ,Medicine ,Aorta, Abdominal ,Common carotid artery ,Aorta ,General Veterinary ,business.industry ,Abdominal aorta ,External iliac artery ,Ultrasonography, Doppler ,Arteries ,Femoral Artery ,Carotid Arteries ,Blood pressure ,Basilar Artery ,Pulsatile Flow ,cardiovascular system ,Cardiology ,Female ,business ,Blood Flow Velocity - Abstract
Normal values of arterial blood flow velocity and waveforms in major arteries of 10 healthy conscious Beagle dogs were determined using Doppler ultrasonography. Peak systolic, early diastolic, and end-diastolic velocities of the basilar artery, common carotid artery, abdominal aorta, external iliac artery, femoral artery, and peak ejection velocity of the valvular aorta were evaluated. Pulsatility index (PI) of the basilar artery and blood pressure were recorded. All arteries had a high-resistance flow pattern with triphasic flow velocity except the basilar artery, which had a low-resistance pattern. Mean peak systolic velocities of the basilar artery, common carotid artery, abdominal aorta, external iliac artery, and femoral artery were 72 +/- 19, 115 +/- 17, 121 +/- 24, 105 +/- 25, and 110 +/- 17 cm/s, respectively. The PI of the basilar artery and peak ejection velocity of the valvular aorta were 1.37 +/- 0.13 and 96 +/- 16 cm/s, respectively. Mean systolic and diastolic blood pressures were 137 +/- 13 and 78 +/- 15 mmHg, respectively. Present findings may be used as references in future studies on vascular diseases and hemodynamics in dogs.
- Published
- 2004
49. EFFECT OF METHYLCELLULOSE ON UPPER GASTROINTESTINAL QUALITY IN DOGS
- Author
-
Woqjo Chung, Kichang Lee, Mincheol Choi, Hyun-Kwon Ha, Junghee Yoon, Jinhwa Chang, Joohyun Jung, Sungjoon Won, and Hojung Choi
- Subjects
medicine.medical_specialty ,General Veterinary ,business.industry ,digestive, oral, and skin physiology ,Administration, Oral ,Contrast Media ,chemistry.chemical_element ,Barium ,Methylcellulose ,Gastroenterology ,Surgery ,Radiographic Image Enhancement ,Dogs ,chemistry ,Predictive Value of Tests ,Reference Values ,Internal medicine ,medicine ,Animals ,Upper gastrointestinal ,Barium Sulfate ,business ,Digestive System - Abstract
This study was performed to evaluate and optimize a small bowel contrast technique using barium and methylcellulose in dogs. Ten healthy dogs underwent both a conventional upper gastrointestinal study that used only barium and a modified study that used barium and methylcellulose. The control group received 10 mL/kg of 40% barium suspension. Experimental groups were divided into three subgroups given 15 mL/kg of different viscosities (low, moderate, and high viscosity) of 0.5% methylcellulose after 4 mL/kg of 40% barium suspension. Compared with the control group, dogs receiving methylcellulose had higher-quality upper gastrointestinal studies. Moderate viscosity of methylcellulose was superior to the other methylcellulose groups. In conclusion, the use of methylcellulose is a simple and effective method for improving the image quality in an upper GI examination.
- Published
- 2003
50. Effect of Intravenous Mannitol upon the Resistive Index in Complete Unilateral Renal Obstruction in Dogs
- Author
-
Hojung Choi, Dongwoo Chang, Junghee Yoon, Hee-Chun Lee, Kidong Eom, Kichang Lee, Sungjun Won, Youngwon Lee, and Woojo Chung
- Subjects
Male ,medicine.medical_specialty ,medicine.medical_treatment ,Urology ,Kidney ,urologic and male genital diseases ,Dogs ,medicine ,Animals ,Renal obstruction ,Mannitol ,Dog Diseases ,Left kidney ,Ultrasonography ,General Veterinary ,urogenital system ,business.industry ,Furosemide ,Diuretics, Osmotic ,Resistive index ,Surgery ,medicine.anatomical_structure ,Injections, Intravenous ,Female ,Diuretic ,business ,Ureteral Obstruction ,medicine.drug - Abstract
Some studies have shown that relative to baseline, the renal resistive index (RI) remains unchanged in nonobstructed kidneys and increases in obstructed kidneys after administration of furosemide. To our knowledge, the effect of mannitol administration on the renal RI of dogs has not been reported. We evaluated the renal RI in 16 kidneys in 8 young adult dogs after administration of mannitol. The mean RI decreased significantly from baseline (P < .01). Additionally, left complete ureteral obstruction wasinduced in 5 dogs. Evaluation by Doppler ultrasonography was performed for 5 days. On the 5th day, Doppler examination was repeated at 30 and 60 minutes after administration of mannitol to obstructed dogs. After induction of left ureteral obstruction, the RI of the left kidney increased significantly over 5 consecutive days. Administration of mannitol decreased the RI in the nonobstructed contralateral kidneys, and thus the RI difference between obstructed and nonobstructed kidneys was increased above normal (P < .001). In conclusion, administration of mannitol may be useful as another diuretic agent to identify unilateral ureteral obstruction on Doppler sonographic examination.
- Published
- 2003
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